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| 型号： | MAX668EUB |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/18页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR PWM HYBRID 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 电流模式，混合 |
| 输出数： | 1 |
| 频率 - 最大： | 575kHz |
| 占空比： | 94% |
| 电源电压： | 3 V ~ 28 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 其它名称： | Q1513668 |
EVALUATION KIT AVAILABLE
AVAILAB
LE
MAX668/MAX669
1.8V to 28V Input, PWM Step-Up
Controllers in μMAX
General Description
Features
The MAX668/MAX669 constant-frequency, pulse-width-
modulating (PWM), current-mode DC-DC controllers are
designed for a wide range of DC-DC conversion applica-
tions including step-up, SEPIC, flyback, and isolated-
output configurations. Power levels of 20W or more can
be controlled with conversion efficiencies of over 90%.
The 1.8V to 28V input voltage range supports a wide
range of battery and AC-powered inputs. An advanced
o
o
o
o
o
o
1.8V Minimum Start-Up Voltage (MAX669)
Wide Input Voltage Range (1.8V to 28V)
Tiny 10-Pin μ MAX Package
Current-Mode PWM and Idle Mode? Operation
Efficiency over 90%
Adjustable 100kHz to 500kHz Oscillator or
SYNC Input
BiCMOS design features low operating current (220μA),
adjustable operating frequency (100kHz to 500kHz),
soft-start, and a SYNC input allowing the MAX668/
MAX669 oscillator to be locked to an external clock.
DC-DC conversion efficiency is optimized with a low
100mV current-sense voltage as well as with Maxim’s
o 220 μ A Quiescent Current
o Logic-Level Shutdown
o Soft-Start
Cellular Telephones
Applications
proprietary Idle Mode? control scheme. The controller
operates in PWM mode at medium and heavy loads for
lowest noise and optimum efficiency, then pulses only as
needed (with reduced inductor current) to reduce oper-
ating current and maximize efficiency under light loads.
A logic-level shutdown input is also included, reducing
Telecom Hardware
LANs and Network Systems
POS Systems
Ordering Information
supply current to 3.5μA.
The MAX669, optimized for low input voltages with a
guaranteed start-up voltage of 1.8V, requires boot-
strapped operation (IC powered from boosted output). It
supports output voltages up to 28V. The MAX668 oper-
PART
MAX668 EUB
MAX669 EUB
MAX669EUB/V+T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
10 μMAX
10 μMAX
10 μMAX
Both ICs are available Functional Diagrams
ates with inputs as low as 3V and can be connected in
either a bootstrapped or non-bootstrapped (IC powered
from input supply or other source) configuration. When
not bootstrapped, it has no restriction on output voltage.
in an extremely compact 10-pin
μMAX package.
Typical Operating Circuit
Idle Mode is a trademark of Maxim Integrated Products.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
/V Denotes an automotive qualified part.
Note: Devices are also available in a lead(Pb)-free/RoHS-com-
pliant package. Specify lead-free by adding “+” to the part
number when ordering.
Pin Configuration
V IN = 1.8V to 28V
TOP VIEW
V OUT = 28V
SYNC/
V CC
EXT
LDO 1
10 SYNC/SHDN
SHDN
FREQ
LDO
MAX669
CS+
PGND
FREQ
GND
REF
FB
2
3
4
5
MAX668
MAX669
9
8
7
6
V CC
EXT
PGND
CS+
FB
μ MAX
Pin Configurations appear at end of data sheet.
REF
GND
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim integrated .com.
19-4778; Rev 2; 1/12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX668EUB | 制造商:Maxim Integrated Products 功能描述:PWM STEP UP CONTROLLER SMD SOIC10 |
| MAX668EUB+ | 功能描述:电流型 PWM 控制器 1.8V to 28V Step-Up RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX668EUB+T | 功能描述:电流型 PWM 控制器 1.8V to 28V Step-Up RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX668EUB-T | 功能描述:电流型 PWM 控制器 1.8V to 28V Step-Up RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX668EVKIT | 功能描述:电源管理IC开发工具 Evaluation Kit for the MAX668 MAX669 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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